Thank you for your question.
No, it doesn't mean that all employees of a business must be bilingual. For example, in the case of a bank branch in Saint-Boniface, which is a region with a strong francophone presence, all employees don't have to be bilingual. The bank must have bilingual employees to be able to provide services in French at all times upon request at the counter. This means there may be two people providing services in French, but the bank must ensure these individuals are available during business hours.